<template>
  <view class="login-cantainer">
    <uni-icons type="contact-filled" size="100" color="#AFAFAF"></uni-icons>
    <button type="primary" class="btn-login" open-type="getUserInfo" @getuserinfo="getUserInfo">一键登录</button>
    <text class="tips-text">登录后尽享更多权益</text>
  </view>
</template>

<script>
  import { mapMutations,mapState } from 'vuex'
  
  export default {
    name:"my-login",
    data() {
      return {
        token:"Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1aWQiOjEyLCJpYXQiOjE1MjU0MDIyMjMsImV4cCI6MTUyNTQ4ODYyM30.g-4GtEQNPwT_Xs0Pq7Lrco_9DfHQQsBiOKZerkO-O-o"
      };
    },
    computed: {
      ...mapState('m_user', ['redirectInfo'])
    },
    methods: {
      ...mapMutations('m_user', ['updateUserInfo','updateToken','updateRedirectInfo']),
      // 用户授权后,获取用户基本信息
      getUserInfo(e) {
        wx.openSetting()
        if(e.detail.errMsg === 'getUserInfo:fail auth deny') return uni.$showMsg('您取消了登录授权！')
        
        this.updateUserInfo(e.detail.userInfo)
        
        this.getToken(e.detail)
      },
      async getToken(info) {
        // 获取 code 对应的值
        const [err, res] = await uni.login().catch(err => err)
        
        if( err || res.errMsg !== 'login:ok') return uni.$showMsg('登录失败！')
        
        // 准备参数
        const query = {
          code: res.code,
          encryptedData: info.encryptedData,
          iv: info.iv,
          rawData: JSON.stringify(info.rawData),
          signature: info.signature
        }
        // console.log(query)
        const { data: loginResult } = await uni.$http.post('/api/public/v1/users/wxlogin',query)
        // console.log(loginResult)
        this.updateToken(this.token)
        this.navigateBack()
        if(loginResult.meta.status !== 200) return uni.$showMsg('登录失败！')
        // uni.$showMsg('登录成功！')
        
        // 直接把 token 保存到 vuex 中
        this.updateToken(loginResult.message.token)
      },
      navigateBack() {
        if(this.redirectInfo && this.redirectInfo.openType === 'switchTab') {
          uni.switchTab({
            url: this.redirectInfo.from,
            complete: () => {
              this.updateRedirectInfo(null)
            }
          })
        }
      }
    }
  }
</script>

<style lang="scss">
.login-cantainer {
  height: 750rpx;
  background-color: #f8f8f8;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: relative;
  overflow: hidden;
  
  &::after {
    content: '  ';
    display: block;
    width: 100%;
    height: 40px;
    background-color: white;
    position: absolute;
    bottom: 0;
    left: 0;
    border-radius: 100%;
    transform: translateY(50%)
  }
  
  .btn-login {
    width: 90%;
    border-radius: 100px;
    margin: 15px 0;
    background-color:  #C00000;
  }
  .tips-text {
    font-size: 12px;
    color: gray;
  }
}
</style>
